Ammunition



1 corrosive Patented June 7, 1 932 UNITED STATES? PATENT oFFict:

JAMES E. mums, or rmnenroar, comvncrrcur,

ASSIGNOR T REMINGTON ARMS comrm, 11m, A coaroaarron or DELAWAREAMMUNITION No Drawing.

This invention relates torpriming mixtllIGS for ammunition, andparticpla'rly to priming mixtures of the such mixtures beingcharacterized by the absence of any ingredients which leave hygroscopicresidues in the gun bore, thereby pro moting corrosion and rusting ofthe bore. A few such mixtures are known at this time and owing to theirhighly desirable nonproperties they have largely displaced'the oldercorrosive mixtures.

" The function of a to supply a flame of suflicient intensity and heatto ignite propellant powder, the prim u ing-compositions include twoessential ingredients; first,a fuel or substance to be burned,

and second, an oxidizer to furnish oxygen for the combustion of thefuel. A third ingredient, however, is quite universally used, thefunction of which, stated in very general terms is to initiate thereaction between the oxidizer and the fuel; thus, its essentialcharaicteristic is that it react under the stimulus of a blow to producesufficient flame and/or heat to start the combustion of the fuel by theoxidizer.

As such a combustion initiator mercury fuL- minate has been very longperiod of time. Mercury fulminate, I) however, is undesirable forseveral reasons.

It is expensive and dangerous to manufac- "ture, and great dilficulty isencountered in securing a product of uniform quality. Furs -ther,mercury fulminate is"of a poisonous l character and injurious'to thehealth of the .workmen who handle it or priming mixtures containing it.It also presents the disadvantage of amalgamating with the metal ofcartridge cases and primer cups, rendering it incapable of use in primercups fire) shells of'such' alloys as brass, which are otherwise highlydesirable for this purpose. a Thepresent invention contemplates apriming mixture which is not onlynon-corrosive but in which undesirablemercury fulminate has been replaced by materials which, while fullyefiicient as combustion initiators, can be safely made of, uniformquality, are nonpoisonous and easily handled, and

non-corrosive type,

priming niixture being extensively used for a and (rim' rmit the use forprimer cups and fi shells of Applicatioflfiled August 27,1930. Serialno; 47839;.

metals and alloys, such as brass, which are attacked by mercuryfulminate.

It has been found that admixtures of certain organic nitro compoundsform satisfactory priming mixture sensitizers. For example, good resultshave been secured by the use of an admixture of a' tetracene, such asguanylnitrosaminoguanyltetracene and a nimay be structurally written asfollows:

G H N O and probably the structure A combustion initiator ofguanylnitrosamino- ,guanyltetracene and diazodinitrophenol can be usedin conjunction with the usual fuels,

such as lead sulphocyanate and/or antimony sulphide and/or calciumsilicide, and such non-corrosive oxidizers as barium nltrate, leadnitrate, lead peroxide, etc. -Thus.typ1- cal mixtures are as followsDiazodinitrophenol has the composition v-trated quinone di-azide, suchas the -6-di- Atypical mixture in which anylnitrosaminoguanyletraceneand diazo mitrophenol are used with lead trinitroresorcinate is:

It is to be understood, however, that these formulas may be greatlyvaried, both as to proportions and as to the particular oxidize ing andfuel ingredients, the invention being limited only by a broadconstruction of the appen ed claims.-

What is claimed is: i Y L A priming mixture comprising an ad- 'mixtureof guanylnitrosaminoguanyltetracene and diazodinitrophenol. 2; A primingmixture comprising an ad mixture of guanylnitrosaminoguanyltetracene,diazodinitrophenol, an oxidizing ingre-- dient,"and a fuel ingredient. e

3. A priming mixture comprising an admixture ofguanylnitrosaminoguanyltetracene, diazodinitrophenol, and lead nitrate.

4. A; priming mixture comprising an admixture ofguanylnitrosaminoguanyltetracene, diazodinitrophenol lead nitrate, and vlead sulphocyanate. a 1

5. A priming mixture comprising substantially: a

- DiazodinitrophenoL approximately 37% Guanylnitrosa minoguanyltetracene"approximately 3 Lead nitrate approximately 34 Lead sulphocya-naten-approximately 7 40 Glass approxirnately ,19

v 6; A priming mixture comprising substantially: r

Diazodinitrophenol; approximately 4% "i5 Guanylnitrosaminoguanyltetrarcene "approximately 1 Lead trinitroresorcinate-approximately 40 Leadnitrate "approximately 29 Lead s'ulph0cyanate r approximately 7 5'0Glass .3 approximately 19 JAMES E. BURNS.

I plsuA Mznj Bridgeport, Aimunrrioui late ntdated June 7; 1932.-Disclaimer filed Mareh -;.20,. 1935,7by the assignee, -Remington' Arms"r flferebyeiitersthis .2. of l i eliielain la'are in tetracene anddiazodinitrophenol. i v 2 A a a g o p ure comprising'an ofguanylnitrosaininog uanyl 13 tetraeeiieydiazodinitrophenol, an 'oxidizingingredient, and a fuel ingredient.

